Finding the Fourth Proportional to 447,928.53, 618,142.22 and 243,978.82

Step by Step Solution

1. Step 1: Write the proportion equation
   447,928.53 : 618,142.22 = 243,978.82 : x
2. Step 2: Convert to fraction form
   447,928.53/618,142.22 = 243,978.82/x
3. Step 3: Cross multiply
   447,928.53x = 618,142.22 × 243,978.82
4. Step 4: Simplify right side
   447,928.53x = 150,813,607,302.85
5. Step 5: Solve for x
   x = 150,813,607,302.85/447,928.53
6. Step 6: Final answer
   x = 336,691.23